Clutch connection for motion picture apparatus of the magazine type



Aug. 9, 1938. QWITTELET'AL 2,126,299

CLUTCH CONNECTION FORMOTION PICTURE APPARATUS OF THE MAGAZINE TYPE FiledApril 24, 1936 Patented Aug. e, 1938 uuir srrss PATENT OFFICE onu'rouoouusc'rrou FOR MOTION PIC- on THE MAGAZINE TURE APPARATUS Otto Wittel,Lawrence It. Martin, and Dwight Hunter Smiley, Rochester, N. Y.,assignors, by mesne assignments, to Eastman Kodak Company, Jersey City,Jersey N. .l., a corporation 0! New Appllcutiou April 24, 1936, SerialNo..76;174 6 Claims. (Child- 17) The present invention relates to anautomatic control arrangement for supervising the driving clutch memberof emotion picture apparatus of the magazine type and more particularlyto the which control is supervised by insertion and withdrawol of themagazine itsel Another object of the present invention is a mounting forthe driving clutch member which premits "depression of the clutch memberor a.

swivel movement to facilitate engagement with the driven clutch member.

A further object of the invention is the provision of com surfaces onthe clutch members, which cam surfaces will permit the magazine toretract the driving clutch member for ready insertion and removed of themagazine. 4

Other objects of the invention willbe suggested to those skilled in theart bythe following disclosure.

The above and other objects of the invention are obtained by providing amotion picture apparetus oi the magazine type with a driving clutch 7'member which is normally pressed into. the mega.- 35 zine chamber of theapparatus and'which may be controlled by a linkage and a spring-pressedpin which pin also extends into theme'gazine chamber. The magazinecasing is either 18CSS8d or provided with rounded corners so that thespringpressed pin is operated by entry of the magazine into the chamber,upon complete insertion of the magazine into the camera, or uponwithdrawal of the magazine from said chamber. The driving clutch memberis mounted loosely within a. cap member and is spring pressed toward themegazine chamber. The engaging members on each clutch member may beprovided with cam surfaces so that mere insertion or withdrawal of themagazine will retract the driving clutch, member to permit suchinsertion or withdrawal.

Reference is hereby made to the accompanying drawing wherein likereference characters desig nate similar elements and wherein:

Fig. 1 is a longitudinal cross-section through a, motion pictureapparatus of the magazine type I form an open ended magazine chamber lt.

.into' the magazine chamber and illustrating one form of automaticcontrol for "the driving clutch member. Fig. 2 is a. transverse crosssection to enlarged scale through the apparatus and through theniagazine on the axes of the clutch members therein. Fig. 3 is atransverse fragmentary cross-section through the clutch members whichhave engagingv means provided with cam surfaces. v

By way of-example only the invention is disclosed as applied to a.motion picture camera. of the magazine type. Such camera. includesacesing it to which an objective H is attached and within which edgewalls BL and a. side wall it door it is hinged to casing it and enclosesthe opened end of magazine chamber It.

The driving clutch member to normally extends through an opening ll inthe side Wall lt and i l. Said driving clutch member is mounted for aswivel-like movement in the following manner, see Fig. 2. Amechanismplate it is mounted within casing l0 and carries a supportingbushing it. A cap member 20 is journelledin supporting bushing M2, isprovided internally with a, flared recess 2| and has an end well 22.Said end well 22 has a flat end surface 23 and is provided with anopening lit. The opening M has at least one flat side for a purpose tobe later described. Cap membcr 28 carries a ring of teeth E5 and a.pinion gear 26 1 it having a flat 2t and includes a retaining portion3i! which also has a flat side facing the flat surfece 23 on end well 22of cap member 2t. A retaining member M is also mounted on the restrictedportion 23 of stem member-2i in spaced relation to the retaining portiontil. A resilient means such as a, spring. member 32 is attached tomechanism plate it and bears against the retaining portion 30 of thestem member El.

The restricted portion 2t fits loosely into the opening 26 in the end ofcap member 20 so that the stem member may swivel within the flaredrecess 2|! of said cap member 29. However, the flat 29 on restrictedportion 28 co-operates with the fiat side of opening 241 so that thestem memher will rotate with cap member 20 after engage ment of thesesurfaces. Furthermore, the spring member 32 accomplishes two functions.First, said spring member beers on the retaining portion 30 to move thestem member 21 and the driving clutch member it toward the magazinechamin which the driven clutch member of the magazine is recessed withina lateral depression'of the magazine casing. The film magazine maycomprise a casing 33 having a side wall 34 anda cover 35. A bushing 36is attached to side wall 34 and is provided at one end with a lateraldepression 31. A shaft 38 is journaled in bushing 36 and is connccted atone end to a cap 39 and sprocket disc 40 for engaging the film F. Thecap 39 has a toothed skirt 4i for engaging with a pinion gear 42 withinthe magazine casing 33. A driven clutch member 43 is threaded onto theother end of shaft 38 and is provided with a plurality of teeth 44. Thedriving clutch member I6 is also provided with teeth 45 which areadapted to interengage with the teeth 44 on the driven clutch member 43.

Upon relative axial movement of the magazine and camera toward eachother, the teeth 45 on clutch member l6 will inter-engage with the teeth44 on driven clutch member 43 to form a driving connection. In the eventthat teeth 45 abut against the end of driven clutch member 43, thespring member 32 permits retraction of the driving clutch member i6 andstem member 21 until such time as the teeth 44 and 45 becomeinter-engaged whereupon spring 32 moves the clutch member lG toward theclutch member 43. In the event that clutch members l6 and 43 are not inexact axial alignment, the loose connection between the restrictedportion 28 and the opening 24 in cap member 20 will permit clutch memberI6 and stem member 21 to swing in the necessary direction to permitinter-engagement of the clutch member. Upon withdrawal of thenon-aligning clutch member 43, the spring 32 will press the fiatsurfaces on the retaining portion 30 and on the end of cap member 20together again to right the clutch member l6 and stem member 21 withinthe flared recess 2! of cap member 20.

The automatic control of the driving clutch member 16 may beaccomplished in the manner now to be described. A lever 46 is pivoted ina support 41 on the casing l0.' A second lever 48 is pivoted in aperpendicular plane in a support 49 on a side wall of casing in. A pin50 is slidably mounted in a support on the rear wall of casing in, has atapered end 52 for engaging and camming one end of lever 48 and has itsrear end 53 extending into the magazine chamber i4 adjacent the door-IS. A coil spring 54 encircles pin 58, bears against support 5! at oneendand against a washer 55 attached to pin 50 just below thelower edgewall l2 of the magazine chamber l4. The magazine casing 33 isconventionally provided with rounded corners 56.

As the film magazine is inserted longitudinally into the open end ofmagazinechamber l4, the front rounded corner 56 of the magazine casing33 will press pin 50 downwardly so that the tapered end 52 thereof willswing the end of lever 48 to the rear. This movement of lever 48 willswing the lower end of lever 46 outwardly and will cause clock-wisemovement, see Fig. 2, of the upper end of lever 46. This upper end oflever 46 bears against the end of spring member 32 and moves said springmember against retaining member 3| to retract the stem member 21 andclutch member l6 from the magazine chamber H. The tapered end 52 of pin50 and the mechanical advantages of levers 48 and 46 can be readilydesigned so that the clutch member I6 is retracted withinthe side walll3 of the magazine chamber and so that the film magazine can be readilyinserted in an endwise longitudinal direction. After the film magazinehas been completely inserted the rear rounded corner 58 of magazinecasing 33 permits coil spring 54 to move pin 50 upwardly whereupon thespring member 32 will move stem member 21 and clutch member l6 into themagazine chamber and into engagement with the driven clutch member 43and at the same time will return levers 46 and 48 to their originalposition. As before if there is any non-registration or non-alignmentbetween clutch members l6 and 43, the spring member 32 will force theclutch members together upon registration or will permit tilting of thestem member 21. c

It is also within the contemplation of the present invention toaccomplish the automatic retraction of the driving clutch member bymeans of a proper designing of the engaging means or teeth upon theclutch members. One form of such arrangement of engaging means is shownin Fig. 3.

a As in the preferred form of the invention as disclosed in Fig. 2, thedriving clutch member i6 is mounted upon one end of a stem member 21which has a restricted portion 28 with a fiat side 29 and which has aretaining portion 30 for fitting against the flat side of the end wall22 of cap member 20.- Said cap member 28 is journaled in supportingbushing I9 which is in turn attached to mechanism plate l8. The drivingclutch member i6 extends through an opening l1 in the side wall l3.

The driven clutch member on the film magazine is also quite similarincluding a magazine side wall 34, a bushing 36 provided with a lateraldepression 31 and supporting a shaft 38 which carries a cap 39 inengagement with a pinion gear zine, the driven clutch member 43 is alsoprovided with engaging members 58 which are inclined toward each otherat the bases thereof. As a result upon insertion of the magazine theforward edge of the magazine casing will engage against the cam surfaceof one of the engaging members 51 on the driving clutch member l6 andwill retract that clutch member, which cannot swivel, against the actionof the spring member 32. The converging taper at the base of theengaging members 68 will also create a camming action to'permit thefinal location of the film magazine with the clutch members in axialalignment.

Furthermore, upon withdrawal of the film magazine, the edges of thelateral depression 31 will augment the cammingaction between the innercam surfaces of engaging member 51 to retract the driving clutch memberi6 during removal of the film magazine. co-operating cam surfaces uponthe driving and driven clutch 'rnembers l6 and "43 will permitAccordingly, these.

. 2,126,290 endwise longitudinal insertion of a film mega-- cording tothis modification, the inner end of the stem member 21' is provided witha pointed projection 59 upon which a spring member 32 bears with minimumfriction.

Since many modifications of the present inven tion are possible, thepresent disclosure is to be construed in an illustrative sense and thescope of the invention is defined by the claims which follow.

Having now particularly described our invention what we desire to secureby Letters Patent of the United States and what we claim is:

1. In a photographic apparatus of the megazine type, the combinationwith a housing provided with a magazine chamber having an open end, adriving clutch member in said housing, transversely movable in .saidchamber and normally extending into said chamber, a magazine casingcontaining a dim supply, provided with a lateral depression, and adaptedto be longitudinally inserted endwise into said magazine chamber, and adriven clutch member mounted on said magazine casing and within thelateral depression thereof, of a positive motion transmitting meansassociated with said driving clutch member andincluding a surface whichis within said magazine chamber and which is adapted during the endwiselongitudinal insention of said magazine easing into said chamber to beengaged and moved by said magazine casing for movement of said'drlvingclutch member to permit the complete insertion of said magazine casing.

2. In a photographic apparatus of the magazine type, the combinationwith a housing provided with a magazine chamber having an open end, adriving clutch member in said housing, transversely movable in saidchamber and normally extending into said chamber, a maga= zine casingcontaining a film supply, provided with a lateral depression o adaptedto be longitudinally inserted endwise intosaid megazine chamber, and adriven clutch memben mounted on said magazine casing and within thelateral depression thereof, of a hero operatively connected to saiddriving clutch memher and for moving the same trversely with respect tosaid magazine ehammr, and) an operating member for moving said 1 :-=i e,extending into said magazine chamber and located so as to be engaged andmoved by the zinc casing upon endtwise longitudinal insertion 7 thereofinto said magazine chamber.

3. In a photographic apparatus of the image,-

zine type, the combination with a housing provided with a magazinechamber having an open end, a driving clutch member in said housing,transversely movable into said chamber and normally extending intosaidchamber, a megazine casing containing a dim supply, provided with alateral depression and adapted to be longitudinally inserted endwiseinto said magazine chamber, and a driven clutch member mounted on saidmagazine casing and within the lateral depression thereof, of a' linkageoperatively connected to said driving clutch member and .,for moving thesame transversely with respect tosaid magazine chamber, and an operatingmember for moving said linkage, extending into said magazine chamber andlocated so as to be engaged and moved by the magazine casing uponendwise longitudinalinsertion thereof into said magazine chamber andarranged so as not to be engaged after insertion of the magazine easinginto said chamber a distance such that said driven clutch memberis inalignment with said driving clutch member which then assumes itsnormally extended and engaging position.

4. In a photographic apparatus of the magezine type, the combinationwith a housing provided with a magazine chamber having on open end, adriving clutch member in said housing normally extending into saidchamber and transverselymovable therein and including engaging meanswith cam surfaces, 9. magazine casing containing a film supply, providedwith a lateral depression and adapted to be longitudinally insertedendwise into said magazine chamber, and a driven clutch member mountedon said maga-. zine casing and having engaging means with cam surfaceswithin said lateral depression of said casing, the cam surfaces of theengaging means on said driving clutch member being engaged by themagazine casing upon longitudinal insertion thereof and beingtransversey depressed by the magazine casing until said driven clutchmember is in alignment with said driving clutch member, whereupon theengaging means of the i two clutch members become interengaged.

5. In a photographic apparatus of the magazine type, the combinationwith a housing provided with a magazine chamber having an open end, adriving clutch member in said housing normally extending into saidchamber and transversely movable therein and including engaging.

means with cam surfaces, a magazine casing containing a film supply,provided with a lateral depression and adapted to be longitudinallyinserted endwise into said magazine chamber, and a driven clutch membermounted on said magazine casing and having engaging means with camsurfaces within said'lateral depression of said casing, the engagingmeans of the two clutch members being interengaged for a drivingconnection and the cam surfaces on said clutch member being so arrangedas to permit withdrawal of the magazine casing from said cber withlateral movement of said driving clutch member by said cam surfaces.

d. In a photographic apparatus of the magazine type, a combination witha housing provided with a magazine chamber having an open end,

a driving clutch member in said housing normally surfaces within saidlateral depression of said casing, the engaging means of the two clutchmembers being interengaged for a driving conmotion and the cam surfaceson said clutch members being so arranged as to permit withdrawal of themagazine casing from said chambe:- with lateral movement of said clutchmemher by said cam surfaces, the margins of the.

lateral depression in said casing starting the depression of saiddriving clutch member.

OTTO Wm. LAWRENCE R. mm. P. HUNTER. SMILEY.

